Wonder article, useful and EXTREMEMLY (it’s a word) informative for the web design and development community. As a UX designer and UI Dev, I’ve used WebAIM’s WAVE accesibility evaluation tool before, but upon revisiting it, I realized their OWN SITE was a fail regarding colors(nav link contrast, etc.), but exceptional overall. Check out: http://wave.webaim.org/report#/webaim.org
We may not be able to get it ALL right the first try, but “Fall seven times, get up eight!” as the Japanese proverbs go. Good going WebAIM!